- 1(current)
Q. No.A conducting loop of finite resistance lies on the \(xy \text{-}\)plane. There is a constant magnetic field in the \(z\) direction. The area of the loop varies with time \(t,\) as \(A=A_0(1+\mathrm{sin}~t)\) in appropriate units. The figure that correctly indicates the qualitative behaviour of the power \(P\) dissipated in the loop as a function of time is:
| 1 |  |
2. |  |
| 3. |  |
4. |  |
Subtopic: Â Faraday's Law & Lenz Law |
Level 3: 35%-60%
NEET - 2026
Please attempt this question first.
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Please attempt this question first.
In the above diagram, a strong bar magnet is moving towards solenoid-\(2\) from solenoid-\(1\). The direction of induced current in solenoid-\(1\) and that in solenoid-\(2\), respectively, are through the directions:
1. \(BA\) and \(CD\)
2. \(AB\) and \(CD\)
3. \(BA\) and \(DC\)
4. \(AB\) and \(DC\)
1. \(BA\) and \(CD\)
2. \(AB\) and \(CD\)
3. \(BA\) and \(DC\)
4. \(AB\) and \(DC\)
Subtopic: Â Faraday's Law & Lenz Law |
Level 3: 35%-60%
NEET - 2024
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A conducting circular loop of face area \(2.5 \times 10^{-3}~\text{m}^2\) is placed perpendicular to a magnetic field which varies as \(B=0.5~\text{sin}(100 \pi t)~\text{T}\). The magnitude of induced EMF at time \(t= 0~\text{s}\) is:
| 1. | \(0.125 \pi~ \text{mV}\) | 2. | \(125 \pi ~\text{mV}\) |
| 3. | \(125 \pi~\text{V}\) | 4. | \(12.5 \pi~\text{mV}\) |
Subtopic: Â Faraday's Law & Lenz Law |
 66%
Level 2: 60%+
NEET - 2024
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A big circular coil with \(1000\) turns and an average radius of \(10~\text{m}\) is rotating about its horizontal diameter at a rate of \(2~\text{rad s}^{-1}.\) The vertical component of the Earth's magnetic field at that location is \(2\times 10^{-5}~\text{T},\) and the electrical resistance of the coil is \(12.56~\Omega,\) the maximum induced current in the coil will be:
| 1. | \(2~\text{A}\) | 2. | \(0.25~\text{A}\) |
| 3. | \(1.5~\text{A}\) | 4. | \(1~\text{A}\) |
Subtopic: Â Faraday's Law & Lenz Law |
 60%
Level 2: 60%+
NEET - 2022
Hints
The magnetic flux linked to a circular coil of radius \(R\) is given by:
\(\phi=2t^3+4t^2+2t+5\) Wb.
What is the magnitude of the induced EMF in the coil at \(t=5\) s?
| 1. | \(108\) V | 2. | \(197\) V |
| 3. | \(150\) V | 4. | \(192\) V |
Subtopic: Â Faraday's Law & Lenz Law |
 87%
Level 1: 80%+
NEET - 2022
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The magnetic flux linked with a coil (in Wb) is given by the equation \(\phi=5 t^2+3 t+60\). The magnitude of induced emf in the coil at \(t=4\) s will be:
| 1. | \(33\) V | 2. | \(43\) V |
| 3. | \(108\) V | 4. | \(10\) V |
Subtopic: Â Faraday's Law & Lenz Law |
 90%
Level 1: 80%+
NEET - 2020
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A \(800\) turn coil of effective area \(0.05~\text{m}^2\) is kept perpendicular to a magnetic field \(5\times 10^{-5}~\text{T}\). When the plane of the coil is rotated by \(90^{\circ}\)around any of its coplanar axis in \(0.1~\text{s}\), the emf induced in the coil will be:
| 1. | \(0.02~\text{V}\) | 2. | \(2~\text{V}\) |
| 3. | \(0.2~\text{V}\) | 4. | \(2\times 10^{-3}~\text{V}\) |
Subtopic: Â Faraday's Law & Lenz Law |
 67%
Level 2: 60%+
NEET - 2019
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- 1(current)
Q. No.
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